hills



(No Model.)

A. T. BEMIS.

LUMBER TRUCK.

No. 569,992.v Patented 0011.127, 1896.

a IHM? in ll" UNITED STATES PATENT OFFICE.

ALBERT T. BEMIS, OF INDIANAPOLIS, INDIANA, ASSIGNOR TO THE STANDARDDRY-KILN COMPANY, OF SAME PLACE.

TRUCK.

SPECIFICATION forming part of Letters Patent No. 569,992, dated. October27, 1896.

Application filed February 17, 1896. Serial No. 579,544. (No model.)

To @ZZ whom, t may concern.:

Be it known that I, ALBERT T. BEMIS', a citizen of the United States,residing at Indianapolis, in the county of Marion and State of Indiana,have invented certain new and useful Improvements in Lumber-Trucks; andI do declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to the letters of reference marked thereon,lwhich form a part of this specification.

This invention relates to certain new and useful improvements in trucksfor use in lumber dry-kilns; and it has for its object the provision ofasimple and eflicient truck of the character` described.

The truck consists, essentially, of two longitudinal strips of thinchannelesteel, which are held at the required distance apart by means ofspreaders or hollow cylindrical washers, through which bolts are passed.

The essential feature of the invention resides in the peculiarconstruction of the washer, whereby the side strips of the truckframemay, by tightening the nuts upon the bolts, be sprung inwardsufficiently to cause the nuts upon the bolts to be securely held orlocked against possible accidental displacement.

To this end and to such others as the invention may pertain the sameconsists in the novel features of construction hereinafter described,shown in the accompanying drawings, and then specifically defined in theappended claims.

The invention is clearly illustrated in the accompanying drawings,which, with the letters of reference marked thereon, form apart of thisspeciiication, and in which drawingsmeans of spreaders or washers B,which are interposed between the strips A at suitable points. Thewheels, which are grooved to 55 lit the track upon which they aredesigned to run, are journaled in openings provided for the purpose inthe side strips A, and are preferably provided with roller or ballbearings.

The spreaders or Washers B are preferably cylindrical and hollow, beingcast each in a single casting, or, if preferred, the heads or ends B maybe independent of the body portion of the washer. The heads or ends Bare provided with a central opening, through which is passed the bolt D,and the head B at the point which immediately surrounds the centralbolt-opening is thickened, as shown at B2. The thickness of the washerat 7o the center, through which the bolt is passed, is slightly lessthan the length of the body portion of the washer, so that the sidestrips or plates A A will be sprung inward at the point at which thebolt passes through the washer, as clearly shown in Fig. 3 of thedrawings. The inner surface of the strip A upon each side of the washerwill be fur- Anished with a substantial bearing against the thickenedportion B2 of the washer-head, and 8o the tendency of the plate or stripto spring outward will serve to eifectually prevent the possibility ofthe nuts upon the bolt from workingloose, as will be readily understood.

Having thus described my invention, what I claim to be new, and desireto secure by Letters Patent, is-

1. In a truck for use in lumber-dryin g kilns, two parallel side piecesA, A, the wheels having their axles journaled in openings formed 9o insaid side pieces, the washers orseparators B interposed at intervals ofthe length of the truck and serving to hold the side pieces at therequired distance apart, the said washers B being hollow and havingcentral openings for the passage of a securingbolt,the thickness of thewasher at the point at which the bolt passes through it being less thanat the periphery of the washer, substantially as described and for thepurpose speciied.

2. A washer designed for separating the channel-steel strip forming theframe of a lumber-kiln truck, of the character described, the saidwasher consisting of a hollow body IOO portion having apertul'ed endsfor the pas- In testimony whereof I affix my signature sage of asecuring-bolt, the ends being proin presence of two Witnesses. videdwith a thickened portion surrounding the central bolt-opening and thelength of 5 the Washer at the point at which the bolt Vii-nesses:

passes through it being less than at the outer L. C. HILLS, face of theWasher, substantially as described. FRANKLIN I-I. IIOUGH.

ALBERT T. VB EMIS.

